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  1. MariaDB Server
  2. MDEV-30948

rpl_mdev6020 reveals parallel slave race for Format_description

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Duplicate
    • 10.4(EOL), 10.5(EOL), 10.6(EOL), 10.8(EOL), 10.9(EOL), 10.10(EOL), 10.11
    • N/A
    • Replication
    • None
    • Can result in unexpected behaviour

    Description

      The test failure reported by marko

      rpl.rpl_mdev6020 'innodb,row'            w27 [ fail ]
      		 
              Test ended at 2023-03-28 15:41:13
      		 
       
      		 
      CURRENT_TEST: rpl.rpl_mdev6020
      		 
      mysqltest: At line 42: failed in 'select master_pos_wait('master-bin.000002', 343, 300, '')': 2013: Lost connection to server during query

      and confirmed by BB is explained to be about a race between a parallel slave worker and the driver thread that simultaneously read-from-it and wrote-to-it (actually destroyed) respectively.

      A patch to convert rli->relay_log.description_event_for_exec into atomic<> is coming soon.

      Attachments

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35691 Invalid access, use-after-free, on rli->description_event_for_exec

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            People

              knielsen Kristian Nielsen
              Elkin Andrei Elkin
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